Tool-holding mechanism.



G. Y. COURTNEY.

TOOL HOLDING MECHANISM.

APPLICATION FILED FEB.15, 1913.

,.1,083,193. Patented Dec. 30,1913

2 SHEETS-SHEET 1.

[NVEN T 013 WITNESSES G. Y. COURTNEY. TOOL HOLDING MEGHANISM.

APPLICATION FILED FEB.15,1913

" 1,083,193. Patented Dec. 30, 1913.

2 SHEETS-SHEET 2.

\ill 2 l UNITED STATES T OFFICE.

GILBERT Y. COURTNEY, 0F; HOLLAND, MICHIGAN,

TOOL-'HOLDIN G MECHANISM:

Specification of Letters Patent.

Patented Dec .-30, 1913.

Th all whom it may concern:

Be it known that I, GILBERT Y. COURTNEY, acitizen ofthe United States,residing at Holland, in the county of Ottawa and State of Michigan, haveinvented certain new and useful Improvements in Tool-HoldingMechanism,of which the followingis a specification, reference being had therein tothe accompanying drawings.

-This inventionrelates to turrets or tool holders for lathes and has forits object the production ofa rtool holder whereby thedifferent toolswhich are carried therebymay be successivelybrought into a properoperative position without having to reset-each tool upon the. turret orsupport.

Another object of this invention isthe production ofa simple andeflicient means for. loosening, unlocking, rotating, relocke ing, andtightening the rotary part of the turret so: as: to allow the tools tobe swung to their proper operative positions, and holding, thempositively and rig'idlyin their correctposition to act upon the metal orotherrmaterial to be engaged or cut.by the tools.

With these and otherobjects in view, this invention consists of certainnovel constructions, 7 combinations and arrangements of parts, as willbe hereinafter, fully described and claimed} In the drawings:FigureH1 isa central vertical section through the turret or tool holder; Fig. 2 isa central vertical section taken at'right anglesrto' Fig. 1. Fig. dis ahorizontal 1, sectional viewtakenon line 3 --3 of-Fig. 2. Fig,- 4 is atop plan view ofthe turret or'tool holder. Fig; 5 is a side elevation ofthe upper end-ofthetool holder or turret. Rig. 6jis-an enlarged.sectional view through: the-spring. locking plunger for holdingtheratchet handle against rotation in one. direction. Fig. 7 is :abottom'plan view of=the ratehehhandle. Fig. 81 is a bottom=plan view ofthe cam for, operating the locking rodror- -bar. Fig. 9 is adetailperspective of one of the lugs-which constitutes a guidefor thelocking rod or bar. Fig. 10 isra :top; plan view of the screw which. ensgagesthe-turret and to which;- the operating leverconhandle is secured.

Byureferringto :thedrawings, it, will be seen that 1, Fig. l, designatesthe usual car: riage of theslathe; to :whichqcarriage is securedthe-lower plate. 2, ofthe turret by means of; bolts and shoulder nuts 3as indicated in dotted lines in Fig. 3. The base 2 is provided withanaperture 4 inwhich aperture fits a locating stud 5 havinga downwardlyextending h1g6. which lug fits in the customary corresponding aperturein the carriage of the lathe-1. A supporting standard 7 isintegrallysecured centrally of thebase 2 and isprovided witha centralleft-handedly threaded bore 8 inwhichzbore fitsa screw 9- which screw isthreadedleft-handedlyin that portion whiclr fits in the bore 8, but isthreaded right-handedly at its upper portion. .upon WhlChf-t-hfi nut; 19'fits. A supporting; standard is. also. provided with an unthreadedportion ,10 which. unthreaded portion is provided with akey'or feather11 which-fits in the keyeway l2 formedin the. side-of the; aperture 13.of thehead .14 of the operating. lever, orihandle 15.

he screw member 9 is provided witha centrallylocated aperture-16 whichis nor: mally closed by1 means of a threaded plug 17 and thisaperturevisprovided with: a rightsangularly extending discharge aper:ture 18 for. discharging the lubricant placed in the aperture 16 so asto efli'ciently lubricate t-he-threadsflof the'screw 9 as wellas theunder-side of the head 14 of'the lever 15, the outer sideof the standard7, the inside. and bottom ofithe cam wheel 22, and locking bar 24, andthe portion of the turretcasing-2dwhich rests upon the base 2. Anadjusting nut 19 is screwed on .the upper end of thescrew 9 andclampsth-e handle or lever 15in engagement with the upper end ofthe-CaSing-QO of the turret; The lower end of the screw-9 isprovidedwith a. squared portion 21lwhichsquared .portion carries aloose; collar 22havingan offset carn 23.formed upon-one side thereof.The under-side of this oilset portionis beveled as shown at 2,3 inEig.-= 8,. thusmaking the device a double cam for the purpose ofrais ingthe same over the looking bar 24 when thelever 15 is being returned toits normal position after rotating-the, turret; casing 20-."

A; locking bar 24 is carried by the base plate 2 and slides under thecam .wheel 22 and is providedwitha shoulder portion 25 which shoulderportion 25 is adaptedto be engaged by the-earn portion 23=ofthe wheel22' for reciprocating the bar'24 uponthe base 2.

The. outer end; of;- the, bar 1 24 is widened as indicated at26 so asto. produce a firm gripping .portionluponthe outer end to lock the outercasing 20 in engagementwith the base 2. The outer edge of the bar 24tapers as indicated at 27 so as to facilitate the entrance of the barinto one of the notches 28 formed upon the outer face of the rotatingcasing 20.

The supporting standard 7 is provided with a pair of legs 29 whichstraddle the wheel 22 as illustrated in Fig. 3, and these legs 29 areprovided with apertures 30 through which the bar 24 passes. Slottedstuds 31 are forced into the base 2 in the apertures 32 and in theseslotted studs slides the bar 24 as illustrated in Fig. 3. A bowed spring33 has one end fixedly secured to one of the studs 31 by passing throughthe apertures 34 formed therein, whereas the other end of the spring 33has its end bent down wardly and fitting in the aperture 35 formed nearthe outer end of the bar 24 as illustrated in Fig. 3.

The outer casing 20 is so formed as to easily rotate upon the supportingmember 7 and this supporting member 7 carries near its upper end aspring pressed plunger 36 which plunger works in an aperture 37 formedin the upper end of the rotating casing 20. This plunger 36 is adaptedto engage the ratchet teeth 38 formed upon the under face of the head 14of the operating lever or handle 15 so as to hold the same againstrotation independently of the outer casing 20 in one direction. Aplurality of threaded apertures 39 are formed in the flange 40 of therotating casing 20 and screws 41 are adapted to be threaded therethroughfor firmly holding a tool in an operative position to perform thedesired function when used upon the lathe. These tools may be placedupon the casing 20 in the position as illustrated in Fig. 4 by dottedlines.

When it is desired to rotate the casing 20 and swing a new tool inposition to operate, the handle 15 is pulled toward the operator therebycausing the screw 9 to rotate unclamping the casing 20 from the base 2,swinging the wheel 22 and bringing the cam portion 23 in engagement withthe shoulder 25 of the bar 24. This will slide the bar 24 to theposition as indicated in dotted lines in Fig. 3 thereby releasing thesame from the casing 20. In view of the fact that the plunger 36 willthen engage the ratchet teeth 38 the casing 20 will also be rotated fora quarter of a turn bringing the next succeeding tool to an operativeposition. As soon as the casing 20 has been rotated a quarter of a turn,the bar 24 will return to its normal position engaging the nextsucceeding notch 28 formed in the inner face of the casing 20. The lever15 can then be returned to its normal position by swinging the lever orhandle to the right, clamping the casing 20 firmly to the base 2, thelever or handle then being ready for operation when it is desired toplace the following tool in operation. Of course, it should beunderstood that the ratchet teeth 38 are so formed upon the under faceof the handle 15 as to cooperate with the notches 28 of the casing 20and only cause the casing to rotate for a quarter of a turn. It will beseen that the spring 33 will cause the bar 24 to engage the notches 28;the cam member 23 of the wheel 22 having passed beyond the shoulder 25.

From the foregoing description, it will be seen that the present toolholder or turret is especially adapted for use in connection with workwhere it is necessary to employ several difierent tools and by havingall the tools adjusted upon the same holder the difierent tools may beswung to operate immediately after the preceding tool has performed itsfunction.

Having thus described the invention, what is claimed as new, is

1. A device of the class described comprising a base, a casing carriedby said base, a supporting standard carried by said base, said casingrotatably mounted upon said standard and adapted to turn thereon, ascrew carried by said supporting standard, a reciprocating lookingbar'carried by said base, spring means engaging said bar for normallyholding the same in engagement with said casing, a cam member carried bysaid screw and engaging said locking bar for withdrawing the same. fromengagement with said casing whereby said casing may be rotated when saidscrew is rotated, and said cam member being provided with a second camportion upon its under side whereby said cam member will be raised overthe locking bar when said screw is rotated to its normal position.

2. A device of the class described comprising a base, a casing, asupporting standard, means for locking said casing to said supportingstandard, a central clamping screw, an operating handle connected tosaid central clamping screw and provided with a plurality of ratchetteeth upon its under face, a rod carried within said supporting standardand engaging said operating handle whereby rotary movement will beimparted to said screw when said handle is rotated, and means engagingsaid operating handle for causing said casing to rotate when saidoperating handle is swung. v

3. A device of the class described comprising a base, a supportingstandard, a casing carried by said supporting standard and rotatablymounted thereon, a locking bar extending transversely of said supportingstandard, a vertically ezitending screw carried by said supportingstandard and provided with a cam wheel upon its lower end, a shoulderformed upon said locking bar and adapted to be engaged by said cam wheelfor causing said locking bar to be Withdrawn when said cam Wheel isrotated, a ratchet operating handle carried by the upper end of saidscrew, a spring pressed plunger engaging said ratchet handle and adaptedto hold the same against independent rotation relative to said casing,means for holding tools in engagement with said casing, and means fornormally holding said sliding bar in engagement with said casing wherebysaid casing will be held against independent rotation relative to saidsupporting standard. 1

4. A device of the class described comprising a base, a supportingstandard, a casing, said casing provided with notches formed upon itsinner face, a locking bar slidably mounted upon said base and adapted toengage one of said notches formed in said casing, guiding studs carriedby said base, said locking bar slidably mounted in said guiding studs, aspring secured to one of said studs, said spring engaging said slidingbar and adapted to normally hold the same in engagement with one of saidnotches.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

GILBERT Y. COURTNEY. Witnesses:

0. WM. SMITH, GRANT J. BROWN.

Copies of thll patent may be obtained for five cents each, by addressingthe Commissioner of Patenta, Washington, D. G.

